Lighting device



FIG. 1 is a front perspective view of the design with the headstrap attached;

FIG. 2 is a front perspective view of the design;

FIG. 3 is a rear perspective view of the design;

FIG. 4 is a front view of the design;

FIG. 5 is a back view of the design;

FIG. 6 is a right side view of the design, the left side view of the design is a mirror image of the right side view;

FIG. 7 is a top view of the design; and,

FIG. 8 is a bottom view of the design.

The broken lines immediately adjacent to the shaded areas represent the boundaries of the claimed design. The broken line showing of the strap detail in FIG. 1 represents environment. None of the broken lines form part of the claimed design. 

CLAIM I claim the ornamental design for a lighting device, as shown and described. 